Shoe



5 5 /A 5 W. ..0 2, 1.,., $67 @f4/4, v 2 e G v U y 5 Y n e I Z W. .r m.. w M J G. w m www M WNW P ,w 9,/

Aug. 16, 1938.

vPalastes Aug. 16,1938 y y 2,127,255v

, UNl'rso STATES PATENT ori-los lerley G. Flint, Brockton, Mnl. Y Application Mms es, 1935, ssi-iai Nt. 12,112 l, s animslcL ca -1r) My invention relates to shoes, and more parchannel and welt groove and the surfaces of the ticularly to shoes havingv an improved insole and insole and welt therebetween including the seam a construction which renders them water. tight. between the insole and welt. In either of4 these In' the drawing'.- ways the seam-between the insole and welt and Figure l. is a side. elevation ofa shoe construct;- theexposed portions of the stitching may .be com- 5 ed according-'to the invention with parts broken. pletely waterproofed, and as the material of away; i which the coating is formed is applied in a liquid Fig. 2 is a transverse section of one form oi' instate it will impregnate the exposed end portions sole for the shoe constructed according to Fig. Lof the stitches Il and lining l and thus destroy 1o 1 on'an enlarged scale before it is incorporated the tendency of these parts to act in the vnature ,loA

f v into the shoe: vof wicks.

' Fig. 3 shows a' vmodillecl form oi insole con` It has been found'in practice that the upper structed according to the invention; and side of leather insoles, particularly the portion l Fig. 4 is a section .on the line 4-4 of Fig. 1 thereof which contacts with the ball ofthe foot,

Ale on an enlarged scale.

Referring to the drawing whichillustrates one chemical action of moisture absorbed from the 'form of shoe according to the invention. I have foot. This 'reduces the comfort to the wearer of shown a shoe having an insole l, and uppers the shoe alter the latter has been in use for some comprising the upper .leather 3 and lining 5, the time. It has been found that this defect may be a combination of the two` At. the outer edge of shoe increased, hy applying tothe upper suriace the insole is a welt l, the insole being channeled of the insole. particularly at the portion thereadjacent the welt as indicated at s. AI line of of which contacts with the ball of the foot, slayer stitchesv il extends through the channel of they of waterproof, friction-reducing material in the these parte in assembled relation. lThe sole i3, It has been found impractical, for various reaas illustrated, is secured to the welt by a line of sons, to apply actual Celluloid or cellophane in stitches it, a ller i1 being inserted between the the form of sheet material as such, particularly insole and sole'. when the sheet is very thin. Therefore, accordspace between-the insole and welt filled by the. is applied to the upper surface oi the insole in a uppers. The seam or crack thus existing forms liquid form which permits the coating to be ex a means whereby water can leak into the interior tremely thin and to possess superior properties of the shoe. Also, insuch a'shoe, water can as compared to actual Celluloid or Cellophane.

groove I8 and channel. 9 of the insole through sheet or coating on the upper surface of the inthe line 0i stitching. Further, the textile lining, y sole a nitrocellulose hase, containing a plasticizer when employed, has its edges exposed at the such as di-ethyl-phthalate or castor oil, dissolved outer surface of the insole and thus forms a in a volatile solvent, the latter preferably being moisture into the interior of the shoe. Stili furnitrocellulose base may be Celluloid or nitrated ther, the material of t e insole commonly abcottorror wood bers. The di-,ethyl-phthalate sorbs moisture. or other plasticiser makes -the coating fiaccid,

For waterproonng the shoe inthe present em'- that is t0 Say. elves it the Diperty which enables in the drawing as of exaggerated thickness. may crumpled Without fracture. The amyl acetate be applied to the under .urface ot the insole and causes the cellulose base tobe slightly absorbed 'welt and be permitted to dry after the shoe is by the leather surfaces to which it is applied so lasted and before the ller i1 and sole are ape8 t0 penetrate the!!! t0 e Sllht extent and Sein forming the coating I! to fili or close the lnployed to increase'the solubility. sole channel 9 and welt groove Ik. This coating As suitable proportions .of constituents of the may extend over the entire width or the under coating material. but without limitationV thereto, surfaces ofthe welt and insole, or it may be 'of it has been found that satisfactory results will becomesy rough and somewhat sticky due to the 16 2o latter beine' ofk textile material or soit leather, or eliminated, and the comfort of the wearer of the 20 es insole through the uppers and weit for securing nature of a sheet of Celluloid or Cellophane. -J

e@ The construction just described provides e. ing to the present invention, this sheet material 30 es leak into the interior thereof by way oi the welt l have found as suitable lor use in forming the 35 de means which tends to act as a wick to draw a mixture or ethyl alcohol and amyl acetate. The 4i) 45 bodiment of the.,invention. a coating i9. shown a thin sheet of leather or the like to be bent or 45 de plied. Preferably, suilicient material is applied cure good adherence. The ethylalcohol is eln- 50' I5 such width as merely to ll or close the insole be secured by using 0.8 pound of Celluloid to each 65 surface of the insole.

This layer 2iy has wearing qualities commensurate with those of Celluloid or Cellophane, and is highly durable, being of a tough, horn-like charto its transparency, indicate its presence. It further materially reduces the friction between the bottom of the foot and the insole. Apparently, even when the coating is worn away after very long use of the shoe, the slight surface impregnation of the leather by the material still makestheieather waterproof and eliminates the stickiness and roughness caused by the chemical action of perspiration on the leather, the prevention of absorption also example, one pound of Celluloid to a gallon of the solvent ithas been found will give satisfactory results.

In Fig.,2 the coating 2| is shown applied to the top surface of the insole. In Fig. 3 thiscoating casual inspection does not Y will be integrally united with the coating i9.

thus improving the waterproofing at the seam between the insole and welt.y

For sanitary reasons, ii'v desired a substance having either or both fungicide.) and germicidal properties may be incorporated into the liquid for forming the coatings i! and 2i. For this purpose I may intimately mix with the liquid material.

before it is applied to the insole, fungicides and germicides such' as phenol. eresol or iodoform as, for example, about 1% by weight of phenol or an equivalent amount of cresci or io'doform.

It will be understood that wide deviations may be made from the form of the invention described without departing 'from the spirit of Athe invention.

I claim:

1. A shoe having a leather insole the upper surface and side edges of which have a ilaccid. wear-resisting, friction-reducing coating of waterproof material, a non-tacky, fiaccid, wearresisting coating of waterproof material on the under surface of said insole integrally united with the first mentioned coating, anda sole'operatively secured to said insole in non-adhering relation to the coating on the under surface of said insole.

2. A shoe having an insole at least a portion of the upper surface of which and the side edges of which adjacent said portion have a. ilaccid, wear-resisting, friction-reducing 'coating of waterproof material, a welt sewed to said insole, a non-tacky, iiaccid, wear-resisting coating oi waterproof material on at least the welt-seam and stitch portions of the under side of the insole integrally united with the first mentioned coating, and a sole secured to' said welt in non-adhering relation to the insole.

v PERLEY G. 

